燃煤电站典型超低排放工艺的SO_3脱除性能及排放特性
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摘要
通过超低排放工艺性能试验,对5种典型超低排放工艺的SO_3脱除性能进行了分析,对不同环保设备的SO_3脱除性能进行了对比,从技术路线、除尘技术的角度对比分析了SO_3的脱除性能。为了分析典型超低排放工艺的SO_3排放特性,通过非线性回归模型模拟得到烟气中SO_3排放绩效和SO_3消减绩效的计算模型,比较分析了不同超低排放工艺的SO_3排放特性。结果表明:烟气中SO_3总脱除率和排放特性与超低排放工艺密切相关,采用LNB+SCR+LLT-ESP+FGD+WESP超低排放工艺具有最佳的SO_3总脱除率,可达到94%以上。超低排放工艺对SO_3脱除可能会产生负面影响。根据SO_3绩效模型可以预估超低排放工艺的SO_3排放绩效和消减绩效。
Based on the ultra-low emission process performance test data, the SO_3 removal performance of 5 typical ultra-low emission processes was analyzed. The SO_3 removal performance of different environmental protection equipments was compared. From the perspective of technology routes and dust removal technologies, SO_3 removal performance were studied. In order to analyze the SO_3 emission characteristics of typical ultra-low emission processes,a calculation model of SO_3 emission performance and SO_3 reduction performance in flue gas was established through nonlinear regression simulation, then the SO_3 emission characteristics of different ultra-low emission processes were compared and analyzed. The results show that the total SO_3 removal efficiency and emission characteristics in flue gas are closely related to the ultra-low emission processes. The LNB +SCR+LLT-ESP + FGD + WESP ultra-low emission process has the best overall SO_3 removal efficiency of 94% or more.Ultra-low emission processes may have a negative impact on SO_3 removal. According to the calculation model, the SO_3 emission performance and the emission reduction performance of the ultra-low emission processes can be estimated.
Based on the ultra-low emission process performance test data, the SO_3 removal performance of 5 typical ultra-low emission processes was analyzed. The SO_3 removal performance of different environmental protection equipments was compared. From the perspective of technology routes and dust removal technologies, SO_3 removal performance were studied. In order to analyze the SO_3 emission characteristics of typical ultra-low emission processes,a calculation model of SO_3 emission performance and SO_3 reduction performance in flue gas was established through nonlinear regression simulation, then the SO_3 emission characteristics of different ultra-low emission processes were compared and analyzed. The results show that the total SO_3 removal efficiency and emission characteristics in flue gas are closely related to the ultra-low emission processes. The LNB +SCR+LLT-ESP + FGD + WESP ultra-low emission process has the best overall SO_3 removal efficiency of 94% or more.Ultra-low emission processes may have a negative impact on SO_3 removal. According to the calculation model, the SO_3 emission performance and the emission reduction performance of the ultra-low emission processes can be estimated.
引文
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[21]刘宇,单广波,闫松,等.燃煤锅炉烟气中SO3的生成、危害及控制技术研究进展[J].环境工程,2016,(12):93-97.Liu Yu,Shan Guangbo,Yan Song,et al.Progress in research on formation,harm and control technique of SO3in flue gas of coal-fired boiler[J].Environmental Engineering,2017,(12):93-97(in Chinese).
[22]上海市环境保护局.DB 31/933-2015上海市大气污染物综合排放标准[S].上海:上海市环境保护局办公室,2015.Shanghai Environmental Protection Bureau.DB31/933-2015 Integrate emission standards of air pollutants[S].Shanghai:Shanghai Environmental Protection Bureau Office,2015(in Chinese).
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[24]高翔.超低排放扭转了“煤炭等于污染”的观念[N].中国环境报,2016-2-29(3).Gao Xiang.The concept that coal equals pollutions is reversed by ultra-low emission[N].China Environment News,2016-2-29(3)(in Chinese).
[25]Mitsubishi high efficiency system-ultimate solution for SO3.PM and mercury[R].Japan:Mitsubishi Heavy Industries,Ltd.2003:1-38.
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[27]胡斌,刘勇,任飞,等.低低温电除尘协同脱除细颗粒与SO3实验研究[J].中国电机工程学报,2016,36(16):4319-4325.Hu Bin,Liu Yong,Ren Fei,et al.Experimental study on simultaneous control of fine particle and SO3 by low-low temperature electrostatic precipitator[J].Proceedings of the CSEE,2016,36(16):4319-4325(in Chinese).
[28]李清毅,胡达清,张军,等.超低排放脱硫塔和湿式静电对烟气污染物的协同脱除[J].热能动力工程,2017,32(8):138-143.Li Qingyi,Hu Daqing,Zhang Jun,et al.Synergistic removal of WFGD and WESP on gas pollutants with ultra low emission[J].Journal of Engineering for Thermal Energy and Power,2017,32(8):138-143(in Chinese).
[29]潘丹萍,吴昊,黄荣廷,等.石灰石-石膏法烟气脱硫过程中SO3酸雾脱除特性[J].东南大学学报:自然科学版,2016,46(2):311-316.Pan Danping,Wu Hao,Huang Rongting,et al.Removal properties of sulfuric acid mist during limestone-gypsum flue gas desulfurization process[J].Boiler Technology,2016,46(2):311-316(in Chinese).
[30]罗汉成,潘卫国,丁红蕾.燃煤锅炉烟气中SO3的产生机理及其控制技术[J].锅炉技术,2015,46(6):69-72.Luo Hancheng,Pan Weiguo,Ding Honglei.The formation mechanism of SO3 from coal-fired boiler flue gas and its control technology[J].Boiler Technology,2015,46(6):69-72(in Chinese).
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[3]环境保护部.GB/T13223-2011火电厂大气污染物控制排放标准[S].北京:中国环境科学出版社,2011.Ministry of environmental protection.GB/T13223-2011Emission standard of air pollutants for thermal power plants[S].Beijing:China Environmental Science Press,2011(in Chinese).
[4]中华人民共和国国家发展和改革委员会办公厅.关于印发《煤电节能减排升级与改造行动计划(2014-2020年)》的通知:发改能源[2014]2093号[A/OL].(2014-09-12)[2017-12-20].http://bgt.ndrc.gov.cn/zcfb/201409/t20140919_626242.html.
[5]宋畅,张翼,郝剑,等.燃煤电厂超低排放改造前后汞污染排放特性[J].环境科学研究,2017,30(5):672-677.Song Chang,Zhang Yi,Hao Jian,et al.Mercury emission characteristics from coal-fired power plant before and after ultra-low emission retrofitting[J].Research of Environmental Sciences,2017,30(5):672-677(in Chinese).
[6]姜业正.添加湿空气促进湿法脱硫净烟气中PM2.5及SO3酸雾脱除的研究[D].南京:东南大学,2016.Jiang Yezheng.Study on PM2.5 and SO3 acid mist removal from wet desulfurized flue gas by adding humid air[D].Nanjing:Southeast University,2016(in Chinese).
[7]朱法华.燃煤电厂烟气污染物超低排放技术路线的选择[J].中国电力,2017,50(3):11-16.Zhu Fahua.Methodologies on choosing appropriate technical route for ultra low emission of flue gas pollutants from coal-fired power plants[J].Electric Power,2017,50(3):11-16(in Chinese).
[8]赵磊,周洪光.超低排放燃煤火电机组湿式电除尘器细颗粒物脱除分析[J].中国电机工程学报,2016,36(2):468-473.Zhao Lei,Zhou Hongguang.Particle removal efficiency analysis of WESP in an ultra low emission coal-fired power plant[J].Proceedings of the CSEE,2016,36(2):468-473(in Chinese).
[9]俞立,张达光,汪鑫.燃煤机组烟气超低排放改造技术路线研究[J].环境工程,2017,35(增刊):171-175.Yu Li,Zhang Daguang,Wang Xin.Research on the technology route of ultra low emission modification for power plant[J].Environmental Engineering,2017,35(supplementary issue):171-175(in Chinese).
[10]李庆,姜龙,郭玥,等.燃煤电厂超低排放应用现状及关键问题[J].高电压技术,2017,43(8):2630-2637.Li Qing,Jiang Long,Guo Yue,,et al.Current applications and key problems of ultra-low emission for coal-fired power plant[J].High Voltage Engineering,2017,43(8):2630-2637(in Chinese).
[11]陈文瑞.余热利用低低温电除尘器超低排放改造工程[J].中国环保产业,2017,(7):50-54.Chen Wenrui.Low-low temperature ESP of remainder heat utilization used in ultra-low emission reconstruction project[J].China Environmental Protection Industry,2017,(7):50-54(in Chinese).
[12]张军,郑成航,张涌新,等.某1000MW燃煤机组超低排放电厂烟气污染物排放测试及其特性分析[J].中国电机工程学报,2016,36(5):1310-1314.Zhang Jun,Zheng Chenghang,Zhang Yongxin,et al.Experimental investigation of ultra-low pollutants emission characteristics from a 1000MW coal-fired power plant[J].Proceedings of the CSEE,2016,36(5):1310-1314(in Chinese).
[13]郑婷婷,周月桂,金圻烨.燃煤电厂多种烟气污染物协同脱除超低排放分析[J].热力发电,2017,46(4):10-15.Zheng Tingting,Zhou Yuegui,Jin Qiye.Integrated removal and ultra-low emission of multiple pollutants for coal-fired power plants[J].Thermal Power Generation,2017,46(4):10-15(in Chinese).
[14]史文峥,杨萌萌,张绪辉,等.燃煤电厂超低排放技术路线与协同脱除[J].中国电机工程学报,2016,36(16):4308-4318.Shi Wenzheng,Yang Mengmeng,Zhang Xuhui,Ultra-low emission technical route of coal-fired power plants and thecooperative removal[J].Proceedings of the CSEE,2016,36(16):4308-4318(in Chinese).
[15]Srivatava R K,Miller C A,Erickson C,et al.Emissions of sulfur trioxide from coal-fired power plants[J].Journal of the Air&Waste Management Association,2004,54(6):750-762(in Chinese).
[16]陈朋.钙基吸收剂脱除燃煤烟气中SO3的研究[D].济南:山东大学,2011.Chen Peng.Research of SO3 removal from flue-gas by calcium-based absorbents[D].Jinan:Shandong University,2011(in Chinese).
[17]潘丹萍,吴昊,鲍静静,等.电厂湿法脱硫系统对烟气中细颗粒物及SO3酸雾脱除作用研究[J].中国电机工程学报,2016,36(16):4356-4362.Pan Danping,Wu Hao,Bao Jingjing,et al.Removal effect of wet flue gas desulfurization system on fine particles and SO3 acid mist from coal-fired power plants[J].Proceedings of the CSEE,2016,36(16):4356-4362(in Chinese).
[18]姜烨,高翔,吴卫红,等.选择性催化还原脱硝催化剂失活研究综述[J].中国电机工程学报,2013,33(14):18-31.Jiang Ye,Gao Xiang,Wu Weihong,et al.Review of the deactivation of selective catalytic reduction DeNOx catalysts[J].Proceedings of the CSEE,2013,33(14):18-31(in Chinese).
[19]Ye Zhuang,Jason Kaumb,Richard Liggett,et al.Impacts of acid gases on mercury oxidation across SCR catalyst[J].Fuel Processing Technology,2007,88:929-934.
[20]楼清刚.煤燃烧过程中SO3的生成试验研究[J].能源工程,2008(6):46-49.Lou Qinggang.Study on the formation mechanism of SO3during coal burning[J].Energy Engineering,2008(6):46-49(in Chinese).
[21]刘宇,单广波,闫松,等.燃煤锅炉烟气中SO3的生成、危害及控制技术研究进展[J].环境工程,2016,(12):93-97.Liu Yu,Shan Guangbo,Yan Song,et al.Progress in research on formation,harm and control technique of SO3in flue gas of coal-fired boiler[J].Environmental Engineering,2017,(12):93-97(in Chinese).
[22]上海市环境保护局.DB 31/933-2015上海市大气污染物综合排放标准[S].上海:上海市环境保护局办公室,2015.Shanghai Environmental Protection Bureau.DB31/933-2015 Integrate emission standards of air pollutants[S].Shanghai:Shanghai Environmental Protection Bureau Office,2015(in Chinese).
[23]张悠.烟气中SO3测试技术及其应用研究[D].杭州:浙江大学,2013.Zhang You.Research and application of SO3 measurement in flue gas[D].Hangzhou:Zhejiang University,2013(in Chinese).
[24]高翔.超低排放扭转了“煤炭等于污染”的观念[N].中国环境报,2016-2-29(3).Gao Xiang.The concept that coal equals pollutions is reversed by ultra-low emission[N].China Environment News,2016-2-29(3)(in Chinese).
[25]Mitsubishi high efficiency system-ultimate solution for SO3.PM and mercury[R].Japan:Mitsubishi Heavy Industries,Ltd.2003:1-38.
[26]陆军,刘永强,周飞,等.高硫煤机组低低温省煤器SO3协同脱除试验研究[J].热力发电,2016,45(12):30-36.Lu Jun,Liu Yongqiang,Zhou Fei,et al.Experimental research on simultaneous removal of SO3 by low-low temperature economizer in units firing high-sulfur coal[J].Thermal Power Generation.2016,45(12):30-36(in Chinese).
[27]胡斌,刘勇,任飞,等.低低温电除尘协同脱除细颗粒与SO3实验研究[J].中国电机工程学报,2016,36(16):4319-4325.Hu Bin,Liu Yong,Ren Fei,et al.Experimental study on simultaneous control of fine particle and SO3 by low-low temperature electrostatic precipitator[J].Proceedings of the CSEE,2016,36(16):4319-4325(in Chinese).
[28]李清毅,胡达清,张军,等.超低排放脱硫塔和湿式静电对烟气污染物的协同脱除[J].热能动力工程,2017,32(8):138-143.Li Qingyi,Hu Daqing,Zhang Jun,et al.Synergistic removal of WFGD and WESP on gas pollutants with ultra low emission[J].Journal of Engineering for Thermal Energy and Power,2017,32(8):138-143(in Chinese).
[29]潘丹萍,吴昊,黄荣廷,等.石灰石-石膏法烟气脱硫过程中SO3酸雾脱除特性[J].东南大学学报:自然科学版,2016,46(2):311-316.Pan Danping,Wu Hao,Huang Rongting,et al.Removal properties of sulfuric acid mist during limestone-gypsum flue gas desulfurization process[J].Boiler Technology,2016,46(2):311-316(in Chinese).
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